<template>
  <div class="person">
    <h2>姓名：{{ person.name }}</h2>
    <h2>年龄：{{ person.age }}</h2>
    <button @click="changeName">修改名字</button>
    <button @click="changeAge">修改年龄</button>
    <button @click="changePerson">修改整个人</button>
  </div>
</template>

<script setup lang="ts">
import { ref, watch } from "vue";
let person = ref({
  name: "张三",
  age: 8,
});

function changeName() {
  person.value.name += "~";
}
function changeAge() {
  person.value.age += 1;
}
function changePerson() {
  person.value = { name: "李四", age: 60 };
}

const uu = watch(
  person,
  (value, old) => {
    console.log(value, old);
    if (value.age > 63) {
      console.log(11);
      uu();
    }
  },
  { deep: true }
);
</script>

<style>
.person {
  background-color: turquoise;
  box-shadow: 0 0 10px;
  border-radius: 10px;
  padding: 20px;
}

button {
  margin: 0 5px;
}
</style>
